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ContextItemManager::Subscribe Method (Type, SubscribeContextCallback)

When overridden in a derived class, adds an event callback that is invoked when a context item of the specified item type changes.

Namespace:  System.Activities.Presentation
Assembly:  System.Activities.Presentation (in System.Activities.Presentation.dll)

virtual void Subscribe(
	Type^ contextItemType, 
	SubscribeContextCallback^ callback
) abstract


Type: System::Type
The type of item you want to subscribe to.
Type: System.Activities.Presentation::SubscribeContextCallback
The SubscribeContextCallback that is invoked when contextItemType changes.


contextItemType or callback is nullptr.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.